CVE-2022-23634
Puma is a Ruby/Rack web server built for parallelism. Prior to `puma` version `5.6.2`, `puma` may not always call `close` on the response body. Rails, prior to version `7.0.2.2`, depended on the response body being closed in order for its `CurrentAttributes` implementation to work correctly. The combination of these two behaviors (Puma not closing the body + Rails' Executor implementation) causes information leakage. This problem is fixed in Puma versions 5.6.2 and 4.3.11. This problem is fixed in Rails versions 7.02.2, 6.1.4.6, 6.0.4.6, and 5.2.6.2. Upgrading to a patched Rails _or_ Puma version fixes the vulnerability.
Published:Feb 11, 2022
Last Modified:Apr 23, 2025
EPS:Feb 11, 2022
EPSS Score:0.00369
CVSS Score:8
Affected Products
Vendor
Product
Action
Vendor
Debian
Product
Debian Linux
Debian
Debian Linux
Vendor
Fedoraproject
Product
Fedora
Fedoraproject
Fedora
Vendor
Puma
Product
Puma
Puma
Puma
Vendor
Redhat
Product
Satellite
Redhat
Satellite
Vendor
Rubyonrails
Product
Rails
Rubyonrails
Rails
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
Related CVEs
References
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
